Vehicle charging system and charging control method therefor

This application claims the benefit of Korean Patent Application No. 10-2021-0094138, filed on Jul. 19, 2021, which application is hereby incorporated herein by reference.

The present invention relates to a vehicle charging system and a charging control method therefor.

In-vehicle payment technology provides a simple payment function for refueling, parking, drive-through services, etc. in a vehicle through payment information of a driver registered in advance. In this way, a user may use services without getting out of a vehicle or does not have to prepare a separate payment method (credit card, cash, etc.), which increases convenience.

Recently, the number of electric vehicles, each of which may charge a battery by mounting a charging plug of an external charger to a vehicle charging port, has been increasing. Thus, similarly to a scheme in which an internal combustion engine vehicle uses a gas station, in-vehicle payment technology is applicable to charging stations for electric vehicles.

In particular, in the case of an electric vehicle, by applying an actuator such as a motor to a charging port door for connecting a charging plug, it is possible to control opening and closing of the charging port door through voice recognition or remote control as well as operation of a charging port door open button. Thus, for more convenient charging, linking with in-vehicle payment technology may be considered.

The present invention relates to a vehicle charging system and a charging control method therefor. Particular embodiments relate to a vehicle charging system capable of controlling opening and closing of a charging port door of an electric vehicle based on advance payment in charging of the electric vehicle, and a charging control method therefor.

Accordingly, embodiments of the present invention provide a vehicle charging system and a charging control method therefor that substantially obviate one or more problems due to limitations and disadvantages of the related art.

An embodiment of the present invention provides a vehicle charging system capable of controlling a charging port door by determining a charging intention of a driver based on in-vehicle payment information, and a charging control method therefor.

Additional advantages, objects, and features of embodiments of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of embodiments of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

A charging control method of an electric vehicle according to embodiments of the invention includes receiving, by a head unit of the electric vehicle, input of order information for a charging station, requesting payment based on the order information, and opening a charging port door when charging approval information is received in response to order identification information corresponding to the order information being input to a charger provided in the charging station.

The requested payment may be transmitted to a charging station server communicating with the charger through a service relay server, and the charging approval information may be delivered from the charging station server to the head unit of the electric vehicle through the service relay server.

The order identification information may include first information for identifying the electric vehicle or a user of the electric vehicle or second information generated based on the order information.

The first information may include at least one of a vehicle number of the electric vehicle or a user ID, and the second information may include at least one of a payment number, a receipt number, or a one-time identification number.

The opening may include controlling an actuator for opening and closing the charging port door.

In another embodiment of the present invention, a control method of a charging station server for charging an electric vehicle includes identifying, by the charging station server, approval information corresponding to order identification information when the order identification information is delivered from a charger of a charging station to the charging station server, delivering order information corresponding to the identified approval information to the charger, and transmitting a signal instructing that a charging port door be opened to a head unit of an electric vehicle corresponding to the order identification information when there is a charging request from the charger.

The signal instructing that the charging port door be opened may be transmitted to the head unit of the electric vehicle through a service relay server.

The order identification information may include first information for identifying the electric vehicle or a user of the electric vehicle or second information generated based on the order information.

The first information may include at least one of a vehicle number of the electric vehicle or a user ID, and the second information may include at least one of a payment number, a receipt number, or a one-time identification number.

In another embodiment of the present invention, an electric vehicle includes a head unit and a charging port door allowed to be controlled to be opened or closed under control of the head unit, in which the head unit requests payment based on order information for a charging station when the order information is received and performs a control operation to open the charging port door when charging approval information is received in response to input of order identification information corresponding to the order information to a charger provided in the charging station.

In another embodiment of the present invention, a charging control method for an electric vehicle includes receiving, by the electric vehicle, input of order information for a charging station, receiving the order information by a charging station server corresponding to the charging station, generating, by the charging station server, approval information based on the order information, delivering the approval information to the electric vehicle, inputting order identification information corresponding to the order information to a charger provided in the charging station, identifying, by the charging station server, the approval information corresponding to the order identification information when the order identification information is delivered to the charging station server, delivering charging approval information from the charging station server to the electric vehicle when there is a charging request from the charger, and opening a charging port door of the electric vehicle in response to the charging approval information.

The method may further include delivering the order information from the charging station server to the charger when the approval information is identified and displaying at least a part of the order information on the charger.

The method may further include delivering the charging request to the charging station server when the order information is selected by a user in the charger.

The method may further include requesting, by the charging station server, the charger to release charging plug locking when there is a charging request from the charger.

The order identification information may include first information for identifying the electric vehicle or a user of the electric vehicle or second information generated based on the order information.

The first information may include at least one of a vehicle number of the electric vehicle or a user ID, and the second information may include at least one of a payment number, a receipt number, or a one-time identification number.

It is to be understood that both the foregoing general description and the following detailed description of embodiments of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, and the same or similar elements will be given the same reference symbols and redundant description thereof will be omitted. In the following description, the terms “module” and “unit” for referring to elements are assigned and used interchangeably in consideration of convenience of explanation, and thus, the terms per se do not necessarily have different meanings or functions. Further, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of a related publicly known technology may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are used to help easily understand the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and it should be understood that all alterations, equivalents, and substitutes included in the spirit and scope of the present invention are not excluded.

Although terms including ordinal numbers, that is, “first”, “second”, etc. may be used herein to describe various elements, the elements are not limited by these terms. These terms are generally only used to distinguish one element from another.

When an element is referred to as being “coupled” or “connected” to another element, the element may be directly coupled or connected to the other element. However, it should be understood that another element may be present therebetween. In contrast, when an element is referred to as being “directly coupled” or “directly connected” to another element, it should be understood that there are no other elements therebetween.

A singular expression includes the plural form unless the context clearly dictates otherwise.

In the present specification, it should be understood that a term such as “include” or “have” is intended to designate that the features, numbers, steps, operations, elements, parts, or combinations thereof described in the specification are present, and does not preclude the possibility of addition or presence of one or more other features, numbers, steps, operations, elements, parts, or combinations thereof.

Embodiments of the present invention provide that, in an electric vehicle that can be charged with external power, the charging amount is paid through in-vehicle payment, and when identification information is input to a charger, a predetermined signal is transmitted to the vehicle to automatically open a charging port door.

First, a system configuration applicable to the embodiments will be described.

illustrates an example of a configuration of a vehicle charging system applicable to embodiments of the present invention.

Referring to, a vehicle charging systemmay include a vehicle, a service relay server, a charging station server, and one or more chargers-,-, . . .-N.

The vehicleis preferably an electric vehicle that can be charged through external power. Examples of such an electric vehicle may include, but are not limited to, a plug-in hybrid electric vehicle (PHEV), an electric vehicle (EV), etc. In addition, the vehiclemay include a head unit, a charging port controller, and a charging port actuator.

The head unitmay have a communication function, an input/output function, an in-vehicle payment function, and a charging port opening/closing control function.

For example, the communication function of the head unitmay include an internal communication function for communicating with an internal device of the vehicle including the charging port controllerand an external communication function for communicating with an external entity such as the service relay server. For the internal communication function, the head unitmay include a transceiver corresponding to at least one of vehicle communication protocols such as controller area network (CAN), CAN-flexible data rate (FD), local interconnect network (LIN), Ethernet, etc. In addition, for the external communication function, the head unitmay include a modem corresponding to at least one wireless communication protocol such as 3GPP-based (3G/LTE/5G, etc.) or GSM.

In addition, for the input/output function, the head unitmay include an input device such as a key button, a dial, a microphone (or a microphone signal input terminal), a touch detection device, etc. for receiving a command from a user, and an output device such as a display (or a touch screen), a speaker (or a speaker output terminal), etc.

For example, the head unitmay be implemented in the form of an Audio/Video/Navigation (AVN) system. However, the present invention is not limited thereto. The external communication function may be implemented as a separate controller such as a telematics unit (TMU).

In addition, the head unitmay be implemented as at least one processor, a memory, and a transceiver/modem. In this case, the head unitmay be implemented in the form of storing a set of instructions executed through the processor in the memory to perform the in-vehicle payment function and the charging port opening/closing control function.

The charging port controllermay operate the charging port actuatoraccording to a control signal of the head unitto open or close the charging port door and may monitor an operating state of the charging port actuatorto report a control result according to the control signal or a state of the charging port door to the head unit. In an implementation, the charging port controllermay be integrated with the charging port actuatorand may be omitted when the head unitcan directly control the charging port actuator. Alternatively, the charging port controllermay be implemented as a function of a charging controller (for example, on-board charger (OBC), not illustrated) that controls a charging process of a battery (not illustrated) using external power.

The service relay servermay serve to relay data exchange between the head unitof the vehicleand the charging station server, and according to an embodiment, when there is a payment request including order information from the head unitof the vehicle, payment processing may be performed based on the order information to generate payment approval information. For example, the service relay servermay be implemented as a telematics service server or may communicate with the head unitvia the telematics service server.

When the service relay serverreceives the order information input through the head unit, the charging station serverperforms payment processing based on the received order information (for example, an attempt to make a payment to a separate financial company payment server, etc.). When payment processing is successful, approval information may be delivered to the head unitthrough the service relay server. In addition, when a driver inputs order identification information to any one of the one or more chargers-,-, . . .-N, the charging station servermay receive the order identification information from the charger and deliver approved order-related information such as the charging amount corresponding to the order identification information or the payment approval amount. Here, the order identification information may be a number for identifying a vehicle or driver, such as a vehicle number (license plate), chassis number, or driver information (in-vehicle payment service ID, etc.), or information to be used for a charging procedure, such as a payment number (transaction number), a payment receipt number, or a one-time authentication code that is valid for a limited time. However, the present invention is not limited thereto. In this way, when the user determines to perform charging in the charger, the charging station servermay deliver charging approval information to the charger and the head unit.

Each of the one or more chargers-,-, . . .-N includes a charging plug and a power supply, and preferably includes an input means for the driver to input the order identification information and a display means capable of displaying the order-related information. In addition, each of the chargers may include a charging plug locking device capable of physically fixing the charging plug in a locked state and releasing the locked state according to the charging approval information of the charging station server.

The charging station serverand the one or more chargers-,-, . . .-N may be located at the same location, for example, in a single charging station, and do not have to be disposed in the same location as long as data communication is possible.

With regard to respective elements of the vehicle charging systemillustrated in, elements related to the embodiments of the present invention are mainly illustrated, and thus the actual system may have more or fewer elements.

As an example, the service relay servermay be divided into a telematics service server in charge of a relay function and a payment server for performing payment and generating approval history information. As another example, it is apparent to those skilled in the art that the vehiclefurther includes elements such as a battery for storing power supplied from the charger by mounting the charging plug and a driving motor supplied with power from the battery, and the vehiclemay further include a steering system essential for basic driving, a braking system, safety equipment such as an airbag, various convenience equipment, etc.

is a flowchart illustrating an example of a charging control process according to an embodiment of the present invention.

Referring to, the driver may input order information through the head unitof the vehicle(S). The order information may include at least one piece of information such as order identification information, the charging amount, the payment amount, a payment method, or a charging station desired to be used. However, the present invention is not limited thereto.